An Essay on Chemical Statics (V. 1)

Seitenzahl:

244

Gewicht:

363 g

Erschienen bei:

Cambridge Scholars Publishing

Kurzbeschreibung

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: spcctivc capacities and properties are not changed; if it is powerful, these .capacities experience a great diminution, and combinations are formed having new properties; but the properties which distinguish the permanent gases from vapours, which only assume the gazeous state under certain circumstances, must not be overlooked, AH these effects are varied by the changes of capacity produced by the alteration of temperature, which are much more considerable than in liquids and solids. It is therefore of importance to determine carefully what are the laws to -which the dilatation of elastic fluids is subject, and in this point of view, to compare those which are permanent with those which only assume that state by the action of the first, or by an elevation of tempe- rature. Those substances which are naturally elastic may be brought to the liquid or solid state by combination; they then acquire new properties by their condensation. It is necessary to distinguish the chemical action which they can exercise in this state, and the energy theyhave acquired and can communicate to their combination, regarding the affinity of this latter, as a power resulting from the elementary affinities which succeed it when the combination is at an end, or which give rise to other resulting affinities, when the state of the combination is changed. All the phenomena of nature take place in the atmosphere, Avhich frequently contributes to produce them by its compression, its temperature, or the combination of the parts which compose it; an exact knowledge of the qualities of the atmosphere under these three relations, is therefore necessary. The result of the different causes, which interpose during chemical action, is sometimes a combination whose proportions are constant; sometimes, on t...

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Mehr von:  Claude-Louis Berthollet, Cambridge Scholars Publishing